PN7160 PN7220 Android 15 Porting to i.MX8MN EVK
Introduction
We have an official PN7160/PN7220 Android 15 porting guide (PN7160/PN7220 – Android 15 porting guide). But the patches only for Android 15 AOSP r1 (android-15.0.0_r1). If customer want to porting to the newer release of AOSP, there will have many errors during the source code compiling. This document is for customer reference to solve the error one by one.
NOTE : All the modifications are just for reference. They are NOT a NXP official patches for the newer release of AOSP porting. So the modifications may not be the best solution. Customer please base on their needs to modify the AOSP source code.
Hardware boards:
i.MX8MN EVK
PN7160 EVK
PN7220 EVK
Build the Android for i.MX8MN EVK
The i.MX Android BSP that I used is Android 15.0.0_2.0.0 (L6.12.20_2.0.0 BSP). It could be downloaded from here: Android OS for i.MX Applications Processors | NXP Semiconductors
1. Download the "Documentation" and the "Install Source Package".
2. Follow the Android User's Guide to build the Android BSP for i.MX8MN EVK first.
According to the android_build/.repo/manifests/aosp-android-15.0.0_2.0.0.xml, you will see the AOSP version is android-15.0.0_r32.
Now, follow the PN7160/PN7220 – Android 15 porting guide to porting the NFC to i.MX Android BSP.
1. Kernel Driver :
To establish connection with the PN7220 or PN7160, the Android stack uses the nxpnfc kernel driver. You could download the driver from github below:
nfcandroid_platform_drivers/drivers at br_ar_16_comm_infra_dev · nxp-nfc-infra/nfcandroid_platform_drivers · GitHub
git clone "https://github.com/nxp-nfc-infra/nfcandroid_platform_drivers.git" -b br_ar_16_comm_infra_dev
There is driver for Kernel 6.6 and 6.12. So, please download the correct one for your porting. For example, the kernel in i.MX Android BSP Android 15.0.0_2.0.0 is 6.12. So I will use the 6.12 driver for my porting.
In your porting, make sure the PATH in Makefile and Kconfig files are setting properly.
For example in my porting:
android_build/vendor/nxp-opensource/kernel_imx/drivers/nfc$ tree . ├── Kconfig ├── Makefile └── pn7160 ├── common.c ├── common.h ├── i2c_drv.c ├── i2c_drv.h ├── Kbuild ├── Kconfig ├── Makefile ├── spi_drv.c └── spi_drv.h
1 directory, 11 files
android_build/vendor/nxp-opensource/kernel_imx/drivers/nfc$ cat Makefile # # Makefile for the kernel nfc device drivers. # obj-y += pn7160/
android_build/vendor/nxp-opensource/kernel_imx/drivers/nfc$ cat Kconfig source "drivers/nfc/pn7160/Kconfig"
2. Adding the "nxpnfc" to the i.MX8MN EVK device tree file.
Show the connections table on the board.
Show the pictures
&i2c3 { clock-frequency = <100000>; pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c3>; pinctrl-1 = <&pinctrl_i2c3_gpio>; scl-gpios = <&gpio5 18 GPIO_ACTIVE_HIGH>; sda-gpios = <&gpio5 19 GPIO_ACTIVE_HIGH>; status = "okay";
nxpnfc@28{ compatible = "nxp,nxpnfc"; reg = <0x28>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_nfc>;
nxp,nxpnfc-irq = <&gpio3 22 0>; nxp,nxpnfc-ven = <&gpio3 20 0>; nxp,nxpnfc-fw-dwnld = <&gpio3 21 0>; };
&iomuxc {
pinctrl_nfc: nfcgrp {
fsl,pins = <
MX8MN_IOMUX_SAI5_RXC_GPIO3_IO20 0X19 // VEN
MX8MN_IOMUX_SAI5_RXD0_GPIO3_IO21 0X19 // FW-DWNLD
MX8MN_IOMUX_SAI5_RXD1_GPIO3_IO22 0X19 // IRQ
>;
};
Show the schematic.
3. Modify the imx8mn_gki.fragment
nano vendor/nxp-opensource/kernel_imx/arch/arm64/configs/imx8mn_gki.fragment
Add the CONFIG_NXP_NFC_I2C=m
4. Go to the device/nxp/imx8m/evk_8mn/
Modify the BoardConfig.mk.
# selinux permissive
+BOARD_KERNEL_CMDLINE += androidboot.selinux=permissive
BOARD_SEPOLICY_DIRS := \
$(CONFIG_REPO_PATH)/imx8m/sepolicy \
$(IMX_DEVICE_PATH)/sepolicy \
+ vendor/nxp/nfc/sepolicy \
+ vendor/nxp/nfc/sepolicy/nfc
ShareBoardConfig.mk
$(KERNEL_OUT)/drivers/net/phy/realtek.ko \
$(KERNEL_OUT)/drivers/pps/pps_core.ko \
$(KERNEL_OUT)/drivers/ptp/ptp.ko \
$(KERNEL_OUT)/drivers/net/ethernet/freescale/fec.ko
+ $(KERNEL_OUT)/drivers/nfc/nfc/nxpnfc-i2c.ko
endif
$(KERNEL_OUT)/drivers/trusty/trusty-core.ko \
$(KERNEL_OUT)/drivers/trusty/trusty-log.ko \
$(KERNEL_OUT)/drivers/trusty/trusty-ipc.ko \
$(KERNEL_OUT)/drivers/trusty/trusty-virtio.ko \
+ $(KERNEL_OUT)/drivers/nfc/nfc/nxpnfc-i2c.ko
else
BOARD_VENDOR_RAMDISK_KERNEL_MODULES += \
$(KERNEL_OUT)/drivers/input/touchscreen/goodix_ts.ko \
$(KERNEL_OUT)/drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_i2c.ko
Endif
Compatibility_matrix.xml
netutils-wrapper
1.0
android.hardware.emvco
1
IEmvco
default
device_framework_matrix.xml
nxp.hardware.secureime
1
ISecureIME
default
nxp.hardware.imx_dek_extractor
1
IDek_Extractor
default
vendor.nxp.nxpnfc
2.0
INxpNfc
default
android.hardware.emvco
1
IEmvco
default
evk_8mn.mk
# -------@block_bluetooth-------
# Bluetooth HAL
PRODUCT_PACKAGES += \
android.hardware.bluetooth \
android.hardware.bluetooth-service.default.nxp
# NXP 8987 Bluetooth vendor config
PRODUCT_PACKAGES += \
bt_vendor.conf
# ------nfc-------
$(call inherit-product, vendor/nxp/nfc/device-nfc.mk)
$(call inherit-product, vendor/nxp/emvco/device-emvco.mk)
PRODUCT_PACKAGES += \
android.hardware.nfc-service.nxp
PRODUCT_PACKAGES += \
com.nxp.emvco \
com.nxp.nfc \
nfc_nci_nxp_pn72xx
# -------@block_usb-------
Init.rc
on post-fs && property:vendor.skip.charger_not_need=0
# Swap in only 1 page at a time
write /proc/sys/vm/page-cluster 0
# Grant permission for fetching available_pages info of statsd
chown system system /proc/pagetypeinfo
chmod 0440 /proc/pagetypeinfo
exec u:r:vendor_modprobe:s0 -- /vendor/bin/modprobe -a -d \
/vendor/lib/modules nxpnfc_i2c
write /sys/power/wake_lock nosleep
on post-fs-data && property:vendor.skip.charger_not_need=0
setprop vold.post_fs_data_done 1
ueventd.nxp.rc
/sys/devices/virtual/thermal/thermal_zone* trip_point_0_hyst 0660 system system
/sys/devices/virtual/thermal/thermal_zone* trip_point_1_hyst 0660 system system
/dev/dmabuf_imx 0664 system system
/sys/class/backlight/* brightness 0660 system system
/dev/ttymxc1 0666 nfc nfc
/dev/ttymxc2 0666 nfc nfc
/dev/nxpnfc 0666 nfc nfc
# for libcamera
/dev/media* 0660 system camera
/dev/v4l-subdev* 0660 system camera
5.
hardware/interfaces/compatibility_matrices/compatibility_matrix.202404.xml
android.hardware.wifi.hostapd
1
IHostapd
default
android.hardware.wifi.supplicant
2
ISupplicant
default
nxp.hardware.imx_dek_extractor
1
IDek_Extractor
default
vendor.nxp.nxpnfc
2.0
INxpNfc
default
vendor.nxp.emvco
1
INxpEmvco
default
6. android_build/vendor/nxp/nfc/device-nfc.mk
android_build/vendor/nxp/emvco/device-emvco.mk
Two approach.
1. NXP NFC Patch to Android AOSP and then build. If the Android release is too new, It will be a lot of errors,
2. Copy the R1 files to R30 first, then run NXP NFC patch. Then build.
I use the second.
Download the AOSP R1 source code.
Copy the R1 replace the folders below.
Apply the patches.
build the code.
Here is the error list and the reference solution.
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